support for CentOS on the Raspberry Pi added

roles/raspberrypi/tasks/prereq/CentOS.yml

@@ -0,0 +1,8 @@
+---
+- name: Enable cgroup via boot commandline if not already enabled for Centos
+  lineinfile:
+    path: /boot/cmdline.txt
+    backrefs: yes
+    regexp: '^((?!.*\bcgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory\b).*)$'
+    line: '\1 cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory'
+  notify: reboot